Filtration / Air-Oil Separator
The oil stays in the system,
the air leaves clean.
Air-oil separators developed against oil aerosols, mist and droplet carry-over are designed for low residual oil in the compressor discharge air and for reliable oil recovery.
Overview
Reduced oil loss,
preserved air quality.
Rotary screw compressors and rotary vacuum pumps inject oil into the compression chamber for sealing, cooling and lubrication. After compression, separating that oil from the air stream is critical both for air quality and for oil consumption.
Fil Filter air-oil separators are developed with multi-layer coalescing media to separate oil aerosols and fine droplets from the air stream. The objective is to keep compressor oil inside the system, deliver clean discharge air and maintain stable separation performance across the service interval.
Why It Matters
Separation that reduces oil loss
and preserves air quality.
An air-oil separator operates in continuous contact with the entire air output of the compressor. Insufficient separation of oil aerosols lowers discharge-air quality, raises oil consumption and directly affects operating cost.
A correctly designed separator keeps the oil inside the system while keeping pressure loss under control. Air quality is preserved and the compressor continues to operate efficiently across the service interval.
Air Quality Preservation
Low residual oil carry-over delivers cleaner discharge air in the compressed-air line. This is critical for industrial processes, sensitive equipment and any application with an air-quality requirement.
Reduced Oil Consumption
Separated oil is recovered inside the system and returns to the compressor circuit. Top-up demand, waste-oil volumes and operating costs across the service interval can be reduced as a result.
Compressor Efficiency
Correctly sized separators keep differential pressure under control. The compressor then operates within its design efficiency window rather than under the elevated load that a clogged or under-performing element would create.
Engineering Features
Multi-Layer Coalescing Media
A coalescing media structure built from borosilicate microfibre and synthetic layers helps merge fine oil aerosols into larger droplets. Oil is separated inside the system and routed to recovery while the air keeps flowing.
Low Residual Oil Carry-over
Air-oil separators are designed for low residual oil carry-over in the compressor discharge air. Stable separation performance at rated flow and pressure supports compliance with air-quality requirements.
OE-Compatible Fit
Element structures are developed around the connection, dimensional and mounting requirements of common screw-compressor systems. The objective is to reduce the need for adaptation and to deliver correct seating, reliable sealing and controlled air flow during service.
Static Charge Dissipation
Static-charge build-up is a meaningful risk in air streams that carry oil mist. A structure that helps dissipate static charge supports safe operation of the separator and adds protection under demanding compressor conditions.
Long Service Life
Media structure and separator design are sized around the compressor duty cycle, oil type, temperature and flow conditions. The goal is to keep separation performance and pressure loss at a controlled level across the service interval.
Differential Pressure Control
The separator structure targets a controlled progression of differential pressure across operating life. Compressor efficiency is preserved, energy loss is reduced and the timing of maintenance becomes more predictable.
Product Families
Tuned to the compressor format,
stable oil-separation performance.
An internal separator element or a spin-on separator structure is selected based on compressor architecture, service method and the air-oil circuit layout. Fil Filter air-oil separators are developed for low residual oil carry-over, controlled differential pressure and reliable oil recovery.
A high-capacity element that operates inside the separator tank where the compressed-air and oil mixture is separated. Developed for screw-compressor applications that require high air flow, a long service interval and stable separation performance.
Best For
Screw compressor systems that use a replaceable element inside the separator tank and require high air flow and long service intervals.
Construction
Where It Serves
Engineered for the field,
validated in the lab.
Applications
Testing Standards
- ISO 8573
- ISO 12500
- OEM compressor specifications
- ATEX (where applicable)
Get in Touch
The right filter
starts with the right engineer.
Reach the office closest to you or message us directly — a spec, an OE number, or a short description is enough; our engineering team responds within one business day.